Bert -vy



B. W. WILUAMS. SAND'PAPERING MACHINE.

APPLICATLQN FILED MAK. 20. |916.

Patented Aug. 22, 1916.

3 SHEETS-SHEET 21 mmm W.' WILLIAMS,- on FARWELL, MICHIGAN, AesoNon on ONE-HALF To VIOLA meren, on oLAaE, MICHIGAN.

eANnrArnmNG-MAGHNE.

Speoiciiti ers Patent. PatentediAilg. 22, 1916'.

Application mee march 2o, 191e.- smi No. 85,455.-

' Tiisginventionhe's-irelation to certain' new 1,02 andi ueeful in'i v sendpug orismoo hingsjmember resiliently rete-ine' in; enge nient? with the surface '1?he*inventionjl y .provi onloffirl'mee y w u `f wh e pressure:lolociw-illy be resihentiy j eremitiwiththebloekcarryi n er-foriothersmoothing mem'- lp-,roogsiy Worn/ofthe same* over y.across vviielithe machine is be:-

\ ijfeot"y of: the invention re "on: offya machine of this e'oprooeting' movement the Szmdl Pepenafryetui/ione 'ofkv the supporting dilriilgf movement of .over the surface to be their objeotsin View the4 novel' onstruo nd;y efrren-` ement ofcoas Wille. el hereinafter pointed out in the a .n wirfinthe drawings 4. Efgur 1" is side elevation of tlie Vcom-` vertical ser-,tiem Fig'l: 1s

n jt-air longitudinal Section@ the plagne of vlinerovements in semil pepering` o'r sundpupering machine for e further object', the' "ne ofthis character in een substantially en. the

verse'section: on the plane of *linel 6-6 of Fig. 4,`F1g. 7 is:4 a, vertical transverse section through' the body to show the operating.

1` designates the body, in the depending sides 2*of`which are mountedthe forward end"reerbeeringond supporting members 3 vfor the/forward end'freary aos 4 ond 5 re,- spectii'ely.l Upon the forward axleffi are mountedthe forward wheels' whilethe rear Wheeie'? are-mountedrupon the rear. axe 5..

Thezwheeis-G and? are preferably positioned #Within the boy 1,. als shown in the drawings andlprovided with suitablek tiresi in order toprevent injury tothe surface over which the device ie to be drown by' means of the handle 9; The bundle 9 is'` bifurouted and has' its opposite portions pivoted to they sides 2v ofi' the body 1 inny ,suitablev manner, *as

withr e' removable extension 11 of suitable form; It' will be evident that' the removable handle extensionv 11 may bereadily'di'sconnectedy from: the-body off the handle 9 Whenthe device is not ink use- Mounted upontiieffr'werd shaft 5 is a, large gear 112'Whie1`1. meshesl with a smaier gear 13 carried upon vthe crank shaft ,14,

shown at 10; The-handle 9`is alsozprovided' upon the' crunk portion 15 of which is mountedA one end of the `pitmanr arm c 16 which: Hasen offset portionrl?l to avoid the rear" shaft 5. It wili beVV understood thatthe crank portionflfi is mounted: i'n one side 2 of the .bodyA 1. The roerV end ofv the. pitrnan erm 16 is pivote/d. to en ups'tendingy eafry 18 offa bracket plete 19 whieh in turn ifs` secured to the upper fece' of the sandpaper: carrying block 20;'y about the center'y of the saine. ,It will therefore be seen thatI as the body 1 is drawn along thesurfeoe the sand peper carrying. block 20 willv fol'ow the same. and reciprooete' upon the surface, owing to the re-V `ciproowti'ng,` movement imparted tothe seme by means'ofthepitmen arm 1 sheet of saxidEp'eper 21 or other suitgble smoothing'metoriel secured upon its lower 6 i The peper.fomfryingV blockQO ce r4v 28 reoiprocates..

mounted in the baehY over the forward and rear edges of the block 2l) and over the transverse grooves 22 ioi'med in the upper tace of said block 20. 'lhe opposite. edges ot' the' sheet 21 are 'held in proper position by means of the,trans verse elanipingr strips 23 which have ribs 34 toi-ined upon their under :faces for forcing the sheet into the transverse grooves It will he understood that suitable Clamp nuts 25 are threaded upon the bolts QG projecting ul'iwardly 'from the block 2O and extending through suitable openings provided for the saine in the strips Q3. lt will therefore be seen that when the thumb nuts are threaded down wardlv upon the bolts 261.,the transre l be securely clamped upon strips E223` wil the lstrip ill. 'It will be understoodthat any suitable material majY be substituted for the sand paper sheet 21.

.ln order that the block 20 may he held in proper position with respect to the body 1 I have provided a pair of `guide arms Q7 which are carried by the sides 2 of the body l, near the rear end of the same. the otlset rear ends Q8 of the. `,uide arms Q7 being slidahly engaged in the `guide sleeve 29 inouriad upon the bloelc 20, adjacent the sides of the. saine, as clearly shown in Fig. Q. As will be seen by referring to Fig. 5, each odset end 28 of' the guide arms 27 is provided with an elon gated longitudinal slot 30, within which is engaged the transverse `pini 3l positioned in the rear end ol the sleeve 29 in which the end ln order that 'the sand paper sheet il may be resiliently retained in engagement with the surface to be smoothed or sand papererh l proi'ide a pair of pressure rollers d2 are in turn mounted upon the pins 34 which project through the opposite end of ilu; cross bar 35 and also through the body portion Irl ot' Isaid brackets 33. It will be seen Ibai the rollers 32 press upon the upper 'tace ol the bloclc 20, owing to the pressure exerted upon the. upper time of the cross bar 35 by the ai'- enate spring 37. rlhe arcuate spi-inn" 37 has its opposite ends flo bitureated and en- `raged upon the suspending bolts il!) which depend from the cross member 4,0 and projeet through the cross bar 35 a suitable distance from the, opposite ends of the saine, the nuts 4l being threaded upon thel lower ends ot saidsuspending bolts 39. The arcuate spring 37 has a socket member 42 mounted centrally upon its upper face to reeeive one end ol' the set screw 43 which is threaded through the center of the cross member 40 and the end ot the supporting arni 44. upon which said rioss member 40 is mounted. 'lhe rear end of the supportiiu;i arin 44 extends `in a horizontal direction 'lrom the. top ot the rear end while the 'forward portingr arrn il is u 4oli the hody l portion Ll5 ot' said suparrhed and then secured i of the set bifurcated brackets 2li-3 which to the top ot' the bodjr 1 in a suitable manner, as shown at 4G. The point-47 of the supporting arm/44 at the connection of the main or horizontal portion with the arched portion thereof rests upon the rearlend` of the top of the body `ll as will be readily understood by referring to Figs. l and 3 of the drawings. Asuitable y ber 48 is engaged around the downwardly curved portion of the supporting arm 441. and is secured by .its opposite ends to the top of the body l. Y j

ln order to look the set 'screw justed position and regulating of the arcuate spring 43 in adthe tension 37, I provided the head screw 43 with peripheral ratchet teeth 49 with which is adapted to be engaged the iipstanding working edge 50 of a locking plate 51 which is adjustably mounted upon the horizontal rear end of the supporting arm 44 by means of a set screw 52 engaged through an elongated longitudinal slot 53 ot said locking plate 5l and a thumb nut 54s threaded upon said set screw 52. It will be readily seen that after the set screw fl has been adjusted and the -upstanding working edge 50 of the adjustable looking plate 5l. engaged with the teeth 4:9, the. thumb nut 54niay be `turned into binding engagement with the upper tace of said looking,r plate 5l to retain the latter in proper position.

B v reterring;r to Fig. G, it will he seen that earh bracket 33 is 'Formed in such manner as to support a pair of forward and rear rollers 32, tlierebir assuring a more even pressure upon the blook 20. B v referringir to ligs. l, 2 and 3, it will he seen that the body l is provided with a door 35 at its forward end and which door` when closed, toi-ins the forward portion of` the top ot the bod;7 l, being hinged to the remainder of said lop by suitable hingesl 56. The door 35 is provided in order that the operator may release the forward a xle 4 and the orank shaft l l and parts eariied by said shaft t and crank shaft I4 to oil the same or for an)T other purpose desired-ravithoiit inverting the complete machine. -lVhen the door Il? is in closed position. it maybe seeurelv locked by engagement ol?` the apex:- tured tree end 57 of `the leaf spring 5S with the pin 59 projecting, from the `torward edge ot' said door It will hennderstood that the opposite end (i0 of the spi-ing 58 is secured to the front of. the body l and the central portion ot' Said leaf spring is bowed outwardly, in order that the spring may serve toseenrely lock the door 35 in closed position.

From the foregoingit will he apparent that the machine will he automaticV in operation and highly eflieient in use, as the pressure upon the block 2O may he readily regulated and the block 2() with its sand bracing or strap meinmovement of the frame, an immovable arm In testimony whereof I allx carried by the frame and projecting beyond in presence of two Witnesses.

the sume, :1nd adjustable pressure exerting BERT W. WILLIAMS. moans carried by said arm and engaged with Witnesses: n

my signature 5 Suid block for` yeldably holding the latter F. F. L1'1TLE1`1ELD,

in Contact with the surface to be smoothed. C. E. BELDIN. 

